Crushing machine



May 7, 1929.

| P. WALKER CRUSHING MACHINE Filed July 23, 1927 ATTORNEY.

Patented May 7, 1929.

UNITED STATES LLOYD I. WALKER, OF BELMONT, MASSACHUSETTS.

CRUSHING MACHINE.

Application filed July as,

This invention relates to a crushing machine.

The object of the invention is to provide a novel and superior constructionof crushlng machine of the type in which the movable crushing member-is suspended at one of its ends, and which may be operatedmore efiiciently than other crushing machines of th1s type of which I am aWar D A further and more specific ob ect of the invention is to provide a novel and improved gyratory crusher of the type having the crushing headsuspended and lnwhich the gyratory crushing motion is imparted to the suspended head in a novel and superior manner.

WVith these objects in view and such others as may hereinafter appear, the invention consists in the crushing machine and in the structures, arrangements and combinat ons of parts hereinafter described and particularly defined in the claims at the end of this specification. p

In the drawing, Figure 1 is a vertical sectional view of a gyratory crushing machine embodying the features of the present invention; Fig.2 is a horizontal section on the line 2-2 of Fig. 1; and F ig. 3 is a vertical section al detail taken on the line 33 of F ig. 2.

Referring to the drawing, the present improved crushing machine comprises in general a pair of cooperating crushing members, i

one of which is suspended to be capable of a gyratory motion about its point of suspension, and provision is made for imparting such gyratory motion to the suspended crushing member in a manner such as to enable the crushing machine to be operated at relatively high crushing speed as compared with any of the standard crushing machines now upon the market. In the preferred embodiment of the invention the gyratory crushing motion is imparted to the suspended crushing member by a plurality of eccentric driving members connected to said member, the number and size of said eccentric driving members being correlated to maintain a total bearing area sufiicient to sustain the maximum crushing load and at the same time to enable the crushing machine to be operated at a relatively high crushing speed as compared with standard machines now upon the market.

In the illustrated crushing machine, 10 represents a hopper formed at the upper end of a frame 12 and through which'the material to smashed is introduced into the crushing and an outer bea ring through the universal 38 art i the etati nary 1927. Serial No. 207,987.

P.rovision is made for suspending the crushing'member 14 at its upper end and for this purpose the crushing member 14 ,is mounted upon a. shaft 15 having a reduced portion 16 extended through an enlarged hole 18 in a cap member 20 formed in arms 22 extended inwardly from opposite sides of the. hopper 10. The upper end of the reduced portion 18 of the shaft is threaded and is provided with a nut 24 which rests upon a collar 26 whose lower end is rounded and aranged to have a bearing in a rounded portion of the cap 20, to permit the shaft 15 and the crushing member 14 carried thereby to gyrate about the bearing between the collar 26 and the cap as will be evident from an inspection of Fig. 1.

The lower portion of the shaft 15 is extended into a block 30 located within ahub 32 supported upon arms 34 extended inwardly from the frame 12 at near the lower portion thereof. p A universal member 38 is provided between the end of the shaft 15 and the walls of the'openingin the block 30 to permit universal movement between the shaft and the block. The block 30 is provided with a p1urality of eccentric driving members 4L0 here in shown as con'lprising sleeves mounted upon shafts 4-2 secured in the upper and lower plates 43, 44 of the hub 32, and the eccentric sleeves have bearings within the block 30 and are preferably arranged symmetrically about the axis of the crusher. Each eccentric sleeve is provided upon its lower end with i a pinion 48 and all of the piniens 48 are arranged to mesh with a central driving gear 419 formed on the upper end of a shaft 50, and

which gear 49 is arranged to be rotated from a suitable source of power through the driving pulley 52, shaft 53, and cooperating bevel gears 54, 55. The shaft 53 is shownas having bearings 56 in the frame 12'of the crusher In the operation of the machine the block 30 is reciprocated laterally within the hub 32 by the eccentric sleeves 40 and imparts an eccentric motion to the lower end of the shaft 15, and consequently in this manner the crushing memberl i is caused to gyrate and to cooperate crushing is to perform the crushing operation. In the illustrated machine the crushing materlal 1S discharged through an annular opening 60 I and falls down the chute 62 to be discharged.

In order; that the present machine may be operated with maximum efiiciency, the number and size of the eccentric driving members are correlated to materially diminish the size of the individual eccentric driving members and t0 compensate for the diminished size thereof by an increased number thereof. By the provision of a sulficient number of eccentrics it is possible to maintain the total bearing area between the eccentrics and the crushing member sufficient to carry the crushing load with safetyand at the same time the increased number of eccentrics enables their individual size to be cut down as vcompared with standard crushing machines so as to enable the crushing speed of the machine to be materially increased over the permissible speed of standard crushing machines. In this vention in which the movable crushing head manner it is possible to operate the crushing machine at speeds which will produce a ca pacity substantially double that of a corresponding size of standard crushing machine, or on the other hand it is possible to obtain the same capacity as any of the standard crushing machines witha crushing machine of materlally less size;

, While in the illustrated machine eccentric sleeves have been shown as the preferred form of eccentric driving memberfor theparticui lar type of crushing machine shown, it is to be understoodthat otherforms of eccentric driving members may be used if found ad- .vantageous, such for example as eccentric shafts. 7,

While in the drawing I have illustrated a is suspended from the top, it will be understood that as used throughout this specification and in the claims the word suspended is intended to define any construction in 'whichthe crushing head is supported at one end.

While the preferred embodiment of the invention has been illustrated and described, it will be understood that the inventionmay be embodied in other forms within the scope of the following claims. 7

Having thus-described the invention, what 'is claimed is 1. Acrushing machine having, in combination, a pair of cooperating crushing members,

7 means for suspending one of the crushing members to permit it to gyrate, and means for imparting'a gyratory motion to the suspended crushing member to perform the crushing operation, including a plurality of eccentric driving members operatively connected with said suspended crushing member and driving means for said eccentric driving members.

\ 2. A crushing machine having, in comdriving members.

3. A crushingmachine having, in combination, a pair of cooperating crushing members, means for suspending one of the crushin g members to permit it to gyrate, and means for imparting a gyratory motion to the suspended crushing member to perform the crushing operation, including a movable member, a plurality of eccentric driving members having bearings in said movable member and driving means for said eccentric driving members, and a universal connection be tween said movable member and the gyratory crushing member.

4 A crushing machine having, in combination, a pair of cooperating crushing members one of which is provided with a shaft extending beyond the opposite ends of the crushing member, means cooperating with one end portionof the shaft for suspending the crushing member to permit it to gyrate, and means for imparting a gyratory motion to the suspended crushing member, including a movable member provided with an opening into which the second end of said shaft is extended, a plurality of eccentric driving members having hearings in said movable member, and driving means for said eccentric driving 7 members.

5. A crushing machine having, in combination, a hollow frame, a hollow stationary crushing member supported thereby, a conical crushing head suspended from the frame and positioned within said stationary crushing member, and means for imparting a gymtory motion to said suspended crushing member including a plurality of eccentric driving members, driving means for said eccentric driving members, and connections between the eccentric driving members and suspended crushing member.

6. A crushing machine having, in combination, a pair of cooperating crushing members, means for suspending one of the crushing members to permit it to gyrate, and means for imparting a gyratory motion to the suspended crushing member to perform the crushing operation, including a plurality of eccentric (driving. members the number and size of tion,apair of cooperating crushing members, nection between said movable member and 10 means for suspending one of the crushing the suspended crushing member, gearing for members to permit it to gyrate, and means for driving the eccentric driving members in uni imparting a gyratory motion to the suspendson, and a housing enclosing the movable ed crushing member to perform the crushing member and said gearing.

operation, including a movable member, a In testimony whereof I have signed my 15 plurality of eccentric driving members havname to this specification.

ing bearings therein, driving means for said eccentric driving members, a universal con- 7 LLOYD P. WALKER. 

